UFC officials announced the Leites-Watson booking Thursday, while
Brazilian outlet Ataque Total first reported the Magalhaes-Perosh
pairing. The UFC has not officially announced the light heavyweight
pairing, but both fighters confirmed the fight via Twitter.

Featherweight champion Jose Aldo will
headline UFC 163, putting his title on the line against former WEC
lightweight ruler Anthony
Pettis. The event takes place at the HSBC Arena in Rio de
Janeiro, Brazil, and will also see Demian Maia
square off with fellow welterweight Josh
Koscheck.

Magalhaes, 28, saw a six-fight winning streak snapped one month
ago, when he was outpointed by Phil Davis at
UFC 159. Known for his elite Brazilian jiu-jitsu skills, the former
M-1 Global champion owns eight of his 10 career wins via
submission.

Another respected grappler, Perosh now looks to right his ship
after suffering a seven-second knockout at the hands of Ryan Jimmo
last July at UFC 149. The defeat halted a three-fight winning
streak for the 41-year-old, who began his light heavyweight Octagon
run with victories over Tom
Blackledge, Cyrille
Diabate and Nick
Penner.

Leites, 31, has won six of his last seven since departing the UFC
on the heels of back-to-back losses in 2009. The onetime UFC title
contender last competed in March 2012, when he avenged a 2010 loss
to Matt
Horwich by submitting the former International Fight League
champion at Amazon Forest Combat 2.

Watson, meanwhile, has won four of his last five, most recently
stopping heavy-handed Bulgarian Stanislav
Nedkov this past February at UFC on Fuel TV 7. The onetime
British Association of Mixed Martial Arts belt holder made his
Octagon debut last September, falling to Brad
Tavares at UFC on Fuel TV 5 in a split decision.